CompletedINA219 Module
PROINA219 Module
License
：Public Domain
Description
Overview
The INA219 is a digital current sensor breakout board that measures both high-side voltage and DC current draw over I2C. It is widely popular in the maker community for monitoring power usage in battery-powered projects and solar energy systems with an accuracy of approximately 1%.
Key Features
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Simplified Power Monitoring: Measures bus voltages from $0V$ to $26V$ and handles up to $\pm 3.2A$ with the standard $0.1\Omega$ shunt resistor.
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I2C Interface: Communicates easily with Arduino, Raspberry Pi, and ESP32. It supports up to 4 programmable addresses by bridging the address pins.
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Calculated Data: Beyond raw voltage, the INA219 can internally calculate current and power ($P = V \times I$), reducing the processing load on your MCU.
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High-Side Sensing: Unlike many cheap current sensors, the INA219 senses on the "high side" (between the power supply and the load), which doesn't disturb the ground path.
Applications
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Solar panel output monitoring
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Battery life estimation and testing
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Over-current protection in DIY electronics
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Real-time power logging for IoT devices
Design Drawing
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Intellectual Property Statement & Reproduction Instructions
This is an open-source hardware project. All intellectual property rights belong to the creator. The project is shared on the platform for learning, communication, and research only; any commercial use is prohibited. If your intellectual property rights are infringed on EasyEDA, please notify us by submitting relevant materials in accordance with the Rules for Complaints and Appeals of IPR Infringement.
Users must independently verify the circuit design and suitability when replicating this project. All risks and consequences are borne by the user, and the platform assumes no liability.
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